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Complex molecular architectures at surfaces


Giuseppe Mercurio, Sergey Subach, Stefan Tautz

DH4TTDH4TT




In the spirit of "Function through Architecture", complex molecular architectures are a promising pathway to obtain functional materials for applications in catalysis, sensing, and information processing. Understanding the structural organisation in these materials is a key issue. In this project we are focusing on self-organisation effects of complex organic molecular layers. Peculiar structure of self-organised molecular phases results often in specific electronic properties, which is prospective for "bottom-up" approach in nanotechnological applications [1]. Several exemplary systems have been addressed: Complex organic layers characterized by non-uniform electronic properties, e.g. tetracene β-phase on Ag(111); Binary and Compound organic phases, e.g. tetracene and DH4T on Ag(111) [2]; Phases of chiral and pro-chiral amino-acids [3].


Publications:

[1] S. Soubatch, R. Temirov, and F. S. Tautz, Fundamental interface properties in OFETs: Bonding, structure and function of molecular adsorbate layers on solid surfaces. phys. stat. sol. (a) 205, 511 (2008).
[2] S. Soubatch, R. Temirov, and F. S. Tautz, Molecular flexibility as a factor affecting the surface ordering of organic adsorbates on metal substrates. Langmuir 22, 9572 (2006).
[3] M. Weinhold, S. Soubatch, R. Temirov, M. Rohlfing, B. Jastorff, F. S. Tautz, and C. Doose, Structure and bonding of the multifunctional amino acid L-DOPA on Au(110). J. Phys. Chem. B 110, 23756 (2006).

Collaborations:

A. Nefedov, C. Wöll, Ruhr-Univ. Bochum,
M. Rohlfing, Univ. Osnabrück.


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